FuYueHua

Based on the analysis of the fault forms and causes of the hydraulic rock drill in the practical application,the paper puts forward the corresponding measures to prevent and reduce the faults, which can be used as reference and guidance in the design, manufacture and using of the hydraulic

In this paper, in the light of the principle of impact drilling work of hydraulic rock drill, the main factors of affecting the rock drill pore forming efficiency are analyzed. This provides the reference for hydraulic rock drill design and optimization of hydraulic rock drill performance parameters

The abnormality of high-temperature in the gear box was found while the model ZYYG170A hydraulic rock drill was used at a tunnel in Henan province. After analysis, technicians found the reason was the extremely small fit clearance between the bush and rotation chuck bushing. After the regulation